Two-phase flow characteristics of stepped spillways

RM Boes, WH Hager - Journal of hydraulic engineering, 2003 - ascelibrary.org
An experimental study on a large model flume with fiber-optical instrumentation indicated
that minimum Reynolds and Weber numbers of about 10 5 and 100, respectively, are …

Cavitation potential of flow on stepped spillways

KW Frizell, FM Renna, J Matos - Journal of Hydraulic Engineering, 2013 - ascelibrary.org
Cavitation on spillways has proven to be an undesirable condition. The formation of vapor-
filled bubbles and cavities and their eminent collapse has led to significant damage to major …

Effect of 30-degree sloping smooth and stepped chute approach flow on the performance of a classical stilling basin

I Stojnic, M Pfister, J Matos… - Journal of Hydraulic …, 2021 - ascelibrary.org
Advances in dam construction techniques have significantly increased the number of
stepped spillways implemented worldwide. Although stepped chutes provide enhanced …

Developing flow in skimming flow regime on embankment stepped spillways

DB Bung - Journal of Hydraulic Research, 2011 - Taylor & Francis
In hydraulic engineering, stepped spillways are effective structures in regard to both energy
dissipation and re-aeration processes. It is well known that flow depths and flow velocities …

Skimming, nonaerated flow on stepped spillways over roller compacted concrete dams

I Meireles, F Renna, J Matos… - Journal of Hydraulic …, 2012 - ascelibrary.org
The nonaerated region may occupy a large portion of the skimming flow in steep, stepped
spillways, particularly for relatively high unit flow rates. In spite of the numerous contributions …

[HTML][HTML] Extreme pressures and risk of cavitation in steeply sloping stepped spillways of large dams

J Matos, CK Novakoski, R Ferla, MG Marques… - Water, 2022 - mdpi.com
Stepped spillways have been increasingly used to handle flood releases from large dams
associated with hydropower plants, and it is important to evaluate the fluctuating pressure …

[PDF][PDF] Hydraulics of stepped weirs and dam spillways: Engineering challenges, labyrinths of research

J Matos, I Meireles - ISHS 2014-Hydraulic Structures and Society …, 2014 - academia.edu
Stepped weirs and dam spillways have been increasingly used for handling flood releases,
due to their inherent benefits, particularly those related to energy dissipation. Among the …

Air entrainment onset in skimming flows on steep stepped spillways: an analysis

IC Meireles, FA Bombardelli, J Matos - Journal of Hydraulic …, 2014 - Taylor & Francis
We discuss, apply and validate several physics-based criteria for air entrainment into flows
on steep stepped spillways, using laboratory observations and numerical results published …

Study of inception point, void fraction and pressure over pooled stepped spillways using Flow-3D

K Morovati, A Eghbalzadeh - … Journal of Numerical Methods for Heat …, 2018 - emerald.com
Purpose While many stepped spillways geometry design guidelines were developed for flat
steps, designing pooled steps might be an appropriate alternative to spillways working more …

Air–water flow properties in step cavity down a stepped chute

S Felder, H Chanson - International Journal of Multiphase Flow, 2011 - Elsevier
For the last three decades, the research into skimming flows down stepped chutes was
driven by needs for better design guidelines. The skimming flow is characterised by some …